Does your car have the Intensive Wash system, if so use the BMW fluid.

Is this to avoid gumming up issues?

Not sure, I don`t recall reading that in the handbook ?

It is used `neat` and cleans extremely well, removes those `white` smears that accumulate from normal screen washing.

When I asked for it in the dealer, the `senior` parts gentleman could not recall selling any before ! I took several bottles at a greatly reduced price Car has gone but I still use it ... on glass / screens around the house _________________B10 V8 Touring #160 Alpina Blue ... SOLD

Definitely use BMW screen wash. It stops the algae and dirt getting stuck inside the washer bottle as well as lubricating the system and preventing gumming up. No.36 has a severe case of stuck debris in the bottle and naturally from that the system. I need to now take the bottle out and put it in the dishwasher to get it clean, its that bad!_________________1995 E36 B3.0 Convertible (rebodied)
1996 E36 B3.2 Touring No:20 - 1 of 5 made
1997 E36 B3.2 Touring No:36 - 1 of 5 made
Alpina, BMW and Detailing Enthusiast

" Special concentrate for the effective cleaning of very dirty windscreen and headlight lenses. Can withstand temperatures as low as -25`C. Only use undiluted "_________________B10 V8 Touring #160 Alpina Blue ... SOLD